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over boosting

Discussion in 'A3/S3/Sportback (8P Chassis)' started by dc240969, Jul 23, 2010.

  1. dc240969
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    dc240969 Member

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    [Jul 23, 2010]
    l mentioned recently that l was seeing a hesitation on full boost. l was told that it is an overbost, 1.7, then the system is pulling the boost back. My wife has started to notice this and she it a bit concerned. This was a little apparant before l had the twintercooler fitted. lm not at home at present and its been playing on my mind a bit. lm hoping its just a hole in the dv diapragm . Anyone had a similar problem and what they did to fix it, or any general things to check.
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  3. akash_sky1
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    akash_sky1 Active Member

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    [Jul 23, 2010]
    When i had my revision D DV fitted, the car started overboosting- was great fun must have been making about 300 bhp, but then kept going to into limp mode. The N75 was letting the boost going to some mad spikes and so it was replaced which fixed the problem.
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  4. dc240969
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    dc240969 Member

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    [Jul 24, 2010]
    Where did you get the N75 valve? How much did it cost?
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